page table


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Related to page table: Page fault

page table

[′pāj ‚tā·bəl]
(computer science)
A key element in the virtual memory technique; a table of addresses where entries are adjusted for easy relocation of pages.
References in periodicals archive ?
The software IOMMU walks through the I/O page table to locate HVAs with GIOVAs as the indexes.
First, the backend removes the mappings for specific GIOVAs in the I/O page table.
Step 5: The backend locates the host page frames for the guest DMA buffer by walking through the shadow page table.
Step 7: The backend creates DMA mappings in the I/O page table for the device.
The column labeled "L" is part of the state transition precondition and refers to the shared-memory lock necessary for mutual exclusion on page table state at the client SMP.
Under the previous optimizations, the transport of an fbuf from the originator to a receiver still requires two page table updates per page: one to remove write permissions from the originator when the fbuf is transferred, and one to return write permissions to the originator after the fbuf was freed by all the receivers.
The operating system's interrupt handler in turn looks up the address in the application's page table.
Receive Buffer Aggregate (Receiver) (a) Find and reserve a free virtual address range in receiver's address space [O(#fbufs)] (b) Enter shared mappings in receiver's page tables [O(#pages)] (c) Construct a buffer aggregate from the received list of fbufs [O(#fbufs)]
This is easily accomplished by giving each process a private level-1 page table (L1PT), which contains two entries for level-2 page tables (L2PT).
Once we dealt with the new page table structure, most changes were merely for alternative page sizes, new page table entry (PTE) formats, and changes to associated data structures.
Even privileged code is generally unaffected unless it has knowledge of the length or format of page table entries.
a, c Sharing pages can be achieved either by providing a copy of the page or by having the same entry in the page tables that point to the shared page.